- Prefix
01733 5- Area
- Peterborough
- Number type
- Geographic landline (01/02)
- Format
01733 5XXXXX- From abroad
+44 1733 5XXXXX- Ofcom blocks in range
- 37
- Blocks in service
- 30
- Range holders
- 21
What are 01733 5XXXXX numbers?
Any UK number matching 01733 5XXXXX sits in the
01733 dialling code for Peterborough.
Ofcom hands these numbers to communications providers in blocks; this range
contains 37 blocks, of which
30 are allocated and usable. Calls from these
numbers are typically homes and businesses in the Peterborough area — or
organisations elsewhere that keep a local 01733 presence using
VoIP.
Who holds 01733 5… number ranges?
| Range holder (allocated by Ofcom) | Number blocks | Example range |
|---|---|---|
| BT | 5 | 01733 50XXXX |
| Digital Space Group Limited | 3 | 01733 510XXX |
| Verizon UK Limited | 3 | 01733 520XXX |
| AQL Wholesale Ltd | 2 | 01733 53XXXX |
| (AQ) LIMITED | 1 | 01733 514XXX |
| Annecto Telecom | 1 | 01733 591XXX |
| Colt Technology Services | 1 | 01733 515XXX |
| Digitech Solutions Global Limited | 1 | 01733 517XXX |
| I.T Communications Limited | 1 | 01733 599XXX |
| Invade International Ltd | 1 | 01733 518XXX |
| Kalnet4U Ltd | 1 | 01733 590XXX |
| Nationwide Telephone Assistance Ltd | 1 | 01733 598XXX |
…and 9 more providers hold smaller allocations in this range.
Ofcom’s data shows the provider each number range was originally allocated to — not who holds an individual number today. Numbers are frequently moved (ported) between providers, and no public database reveals the person or business behind a specific number, so treat any service that claims to with suspicion.
Not every block in this range is in service: of the 37 blocks Ofcom lists, 7 are protected (reserved by Ofcom and not in use). A call appearing to come from an unallocated block is a strong sign of a spoofed number.
Is a call from a 01733 5… number safe?
A local-looking number is never proof of who is calling: fraudsters spoof 01733 caller IDs so their calls look like they come from Peterborough (‘neighbour spoofing’). If an unexpected caller asks for personal, banking or one-time-code details, hang up and ring the organisation back on a number you find independently. To put a name to a caller, see who called me?; to report one, see how to report a scam number.
Check a specific 01733 5XXXXX number
Paste any full number into the checker above (or on the main phone number checker) to see its exact range holder and allocation status from this week’s Ofcom data.
Run mobiles for a business? See our business mobile network comparison or get a quote.
More 01733 number ranges
Full 01733 Peterborough area-code guide › · All UK area codes ›